src/mesa/main/attrib.c

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  7.1
   4  *
   5  * Copyright (C) 1999-2007  Brian Paul   All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included
  15  * in all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  21  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  22  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25 #include "glheader.h"
  26 #include "imports.h"
  27 #include "accum.h"
  28 #include "arrayobj.h"
  29 #include "attrib.h"
  30 #include "blend.h"
  31 #include "buffers.h"
  32 #include "bufferobj.h"
  33 #include "colormac.h"
  34 #include "colortab.h"
  35 #include "context.h"
  36 #include "depth.h"
  37 #include "enable.h"
  38 #include "enums.h"
  39 #include "fog.h"
  40 #include "hint.h"
  41 #include "light.h"
  42 #include "lines.h"
  43 #include "matrix.h"
  44 #include "points.h"
  45 #include "polygon.h"
  46 #include "simple_list.h"
  47 #include "stencil.h"
  48 #include "texobj.h"
  49 #include "texstate.h"
  50 #include "mtypes.h"
  51 #include "math/m_xform.h"
  52
  53
  54 /**
  55  * Allocate a new attribute state node.  These nodes have a
  56  * "kind" value and a pointer to a struct of state data.
  57  */
  58 static struct gl_attrib_node *
  59 new_attrib_node( GLbitfield kind )
  60 {
  61    struct gl_attrib_node *an = MALLOC_STRUCT(gl_attrib_node);
  62    if (an) {
  63       an->kind = kind;
  64    }
  65    return an;
  66 }
  67
  68
  69 void GLAPIENTRY
  70 _mesa_PushAttrib(GLbitfield mask)
  71 {
  72    struct gl_attrib_node *newnode;
  73    struct gl_attrib_node *head;
  74
  75    GET_CURRENT_CONTEXT(ctx);
  76    ASSERT_OUTSIDE_BEGIN_END(ctx);
  77
  78    if (MESA_VERBOSE & VERBOSE_API)
  79       _mesa_debug(ctx, "glPushAttrib %x\n", (int) mask);
  80
  81    if (ctx->AttribStackDepth >= MAX_ATTRIB_STACK_DEPTH) {
  82       _mesa_error( ctx, GL_STACK_OVERFLOW, "glPushAttrib" );
  83       return;
  84    }
  85
  86    /* Build linked list of attribute nodes which save all attribute */
  87    /* groups specified by the mask. */
  88    head = NULL;
  89
  90    if (mask & GL_ACCUM_BUFFER_BIT) {
  91       struct gl_accum_attrib *attr;
  92       attr = MALLOC_STRUCT( gl_accum_attrib );
  93       MEMCPY( attr, &ctx->Accum, sizeof(struct gl_accum_attrib) );
  94       newnode = new_attrib_node( GL_ACCUM_BUFFER_BIT );
  95       newnode->data = attr;
  96       newnode->next = head;
  97       head = newnode;
  98    }
  99
 100    if (mask & GL_COLOR_BUFFER_BIT) {
 101       struct gl_colorbuffer_attrib *attr;
 102       attr = MALLOC_STRUCT( gl_colorbuffer_attrib );
 103       MEMCPY( attr, &ctx->Color, sizeof(struct gl_colorbuffer_attrib) );
 104       newnode = new_attrib_node( GL_COLOR_BUFFER_BIT );
 105       newnode->data = attr;
 106       newnode->next = head;
 107       head = newnode;
 108    }
 109
 110    if (mask & GL_CURRENT_BIT) {
 111       struct gl_current_attrib *attr;
 112       FLUSH_CURRENT( ctx, 0 );
 113       attr = MALLOC_STRUCT( gl_current_attrib );
 114       MEMCPY( attr, &ctx->Current, sizeof(struct gl_current_attrib) );
 115       newnode = new_attrib_node( GL_CURRENT_BIT );
 116       newnode->data = attr;
 117       newnode->next = head;
 118       head = newnode;
 119    }
 120
 121    if (mask & GL_DEPTH_BUFFER_BIT) {
 122       struct gl_depthbuffer_attrib *attr;
 123       attr = MALLOC_STRUCT( gl_depthbuffer_attrib );
 124       MEMCPY( attr, &ctx->Depth, sizeof(struct gl_depthbuffer_attrib) );
 125       newnode = new_attrib_node( GL_DEPTH_BUFFER_BIT );
 126       newnode->data = attr;
 127       newnode->next = head;
 128       head = newnode;
 129    }
 130
 131    if (mask & GL_ENABLE_BIT) {
 132       struct gl_enable_attrib *attr;
 133       GLuint i;
 134       attr = MALLOC_STRUCT( gl_enable_attrib );
 135       /* Copy enable flags from all other attributes into the enable struct. */
 136       attr->AlphaTest = ctx->Color.AlphaEnabled;
 137       attr->AutoNormal = ctx->Eval.AutoNormal;
 138       attr->Blend = ctx->Color.BlendEnabled;
 139       attr->ClipPlanes = ctx->Transform.ClipPlanesEnabled;
 140       attr->ColorMaterial = ctx->Light.ColorMaterialEnabled;
 141       for (i = 0; i < COLORTABLE_MAX; i++) {
 142          attr->ColorTable[i] = ctx->Pixel.ColorTableEnabled[i];
 143       }
 144       attr->Convolution1D = ctx->Pixel.Convolution1DEnabled;
 145       attr->Convolution2D = ctx->Pixel.Convolution2DEnabled;
 146       attr->Separable2D = ctx->Pixel.Separable2DEnabled;
 147       attr->CullFace = ctx->Polygon.CullFlag;
 148       attr->DepthTest = ctx->Depth.Test;
 149       attr->Dither = ctx->Color.DitherFlag;
 150       attr->Fog = ctx->Fog.Enabled;
 151       for (i = 0; i < ctx->Const.MaxLights; i++) {
 152          attr->Light[i] = ctx->Light.Light[i].Enabled;
 153       }
 154       attr->Lighting = ctx->Light.Enabled;
 155       attr->LineSmooth = ctx->Line.SmoothFlag;
 156       attr->LineStipple = ctx->Line.StippleFlag;
 157       attr->Histogram = ctx->Pixel.HistogramEnabled;
 158       attr->MinMax = ctx->Pixel.MinMaxEnabled;
 159       attr->IndexLogicOp = ctx->Color.IndexLogicOpEnabled;
 160       attr->ColorLogicOp = ctx->Color.ColorLogicOpEnabled;
 161       attr->Map1Color4 = ctx->Eval.Map1Color4;
 162       attr->Map1Index = ctx->Eval.Map1Index;
 163       attr->Map1Normal = ctx->Eval.Map1Normal;
 164       attr->Map1TextureCoord1 = ctx->Eval.Map1TextureCoord1;
 165       attr->Map1TextureCoord2 = ctx->Eval.Map1TextureCoord2;
 166       attr->Map1TextureCoord3 = ctx->Eval.Map1TextureCoord3;
 167       attr->Map1TextureCoord4 = ctx->Eval.Map1TextureCoord4;
 168       attr->Map1Vertex3 = ctx->Eval.Map1Vertex3;
 169       attr->Map1Vertex4 = ctx->Eval.Map1Vertex4;
 170       MEMCPY(attr->Map1Attrib, ctx->Eval.Map1Attrib, sizeof(ctx->Eval.Map1Attrib));
 171       attr->Map2Color4 = ctx->Eval.Map2Color4;
 172       attr->Map2Index = ctx->Eval.Map2Index;
 173       attr->Map2Normal = ctx->Eval.Map2Normal;
 174       attr->Map2TextureCoord1 = ctx->Eval.Map2TextureCoord1;
 175       attr->Map2TextureCoord2 = ctx->Eval.Map2TextureCoord2;
 176       attr->Map2TextureCoord3 = ctx->Eval.Map2TextureCoord3;
 177       attr->Map2TextureCoord4 = ctx->Eval.Map2TextureCoord4;
 178       attr->Map2Vertex3 = ctx->Eval.Map2Vertex3;
 179       attr->Map2Vertex4 = ctx->Eval.Map2Vertex4;
 180       MEMCPY(attr->Map2Attrib, ctx->Eval.Map2Attrib, sizeof(ctx->Eval.Map2Attrib));
 181       attr->Normalize = ctx->Transform.Normalize;
 182       attr->RasterPositionUnclipped = ctx->Transform.RasterPositionUnclipped;
 183       attr->PointSmooth = ctx->Point.SmoothFlag;
 184       attr->PointSprite = ctx->Point.PointSprite;
 185       attr->PolygonOffsetPoint = ctx->Polygon.OffsetPoint;
 186       attr->PolygonOffsetLine = ctx->Polygon.OffsetLine;
 187       attr->PolygonOffsetFill = ctx->Polygon.OffsetFill;
 188       attr->PolygonSmooth = ctx->Polygon.SmoothFlag;
 189       attr->PolygonStipple = ctx->Polygon.StippleFlag;
 190       attr->RescaleNormals = ctx->Transform.RescaleNormals;
 191       attr->Scissor = ctx->Scissor.Enabled;
 192       attr->Stencil = ctx->Stencil.Enabled;
 193       attr->StencilTwoSide = ctx->Stencil.TestTwoSide;
 194       attr->MultisampleEnabled = ctx->Multisample.Enabled;
 195       attr->SampleAlphaToCoverage = ctx->Multisample.SampleAlphaToCoverage;
 196       attr->SampleAlphaToOne = ctx->Multisample.SampleAlphaToOne;
 197       attr->SampleCoverage = ctx->Multisample.SampleCoverage;
 198       attr->SampleCoverageInvert = ctx->Multisample.SampleCoverageInvert;
 199       for (i=0; i<MAX_TEXTURE_UNITS; i++) {
 200          attr->Texture[i] = ctx->Texture.Unit[i].Enabled;
 201          attr->TexGen[i] = ctx->Texture.Unit[i].TexGenEnabled;
 202          attr->TextureColorTable[i] = ctx->Texture.Unit[i].ColorTableEnabled;
 203       }
 204       /* GL_NV_vertex_program */
 205       attr->VertexProgram = ctx->VertexProgram.Enabled;
 206       attr->VertexProgramPointSize = ctx->VertexProgram.PointSizeEnabled;
 207       attr->VertexProgramTwoSide = ctx->VertexProgram.TwoSideEnabled;
 208       newnode = new_attrib_node( GL_ENABLE_BIT );
 209       newnode->data = attr;
 210       newnode->next = head;
 211       head = newnode;
 212    }
 213
 214    if (mask & GL_EVAL_BIT) {
 215       struct gl_eval_attrib *attr;
 216       attr = MALLOC_STRUCT( gl_eval_attrib );
 217       MEMCPY( attr, &ctx->Eval, sizeof(struct gl_eval_attrib) );
 218       newnode = new_attrib_node( GL_EVAL_BIT );
 219       newnode->data = attr;
 220       newnode->next = head;
 221       head = newnode;
 222    }
 223
 224    if (mask & GL_FOG_BIT) {
 225       struct gl_fog_attrib *attr;
 226       attr = MALLOC_STRUCT( gl_fog_attrib );
 227       MEMCPY( attr, &ctx->Fog, sizeof(struct gl_fog_attrib) );
 228       newnode = new_attrib_node( GL_FOG_BIT );
 229       newnode->data = attr;
 230       newnode->next = head;
 231       head = newnode;
 232    }
 233
 234    if (mask & GL_HINT_BIT) {
 235       struct gl_hint_attrib *attr;
 236       attr = MALLOC_STRUCT( gl_hint_attrib );
 237       MEMCPY( attr, &ctx->Hint, sizeof(struct gl_hint_attrib) );
 238       newnode = new_attrib_node( GL_HINT_BIT );
 239       newnode->data = attr;
 240       newnode->next = head;
 241       head = newnode;
 242    }
 243
 244    if (mask & GL_LIGHTING_BIT) {
 245       struct gl_light_attrib *attr;
 246       FLUSH_CURRENT(ctx, 0);    /* flush material changes */
 247       attr = MALLOC_STRUCT( gl_light_attrib );
 248       MEMCPY( attr, &ctx->Light, sizeof(struct gl_light_attrib) );
 249       newnode = new_attrib_node( GL_LIGHTING_BIT );
 250       newnode->data = attr;
 251       newnode->next = head;
 252       head = newnode;
 253    }
 254
 255    if (mask & GL_LINE_BIT) {
 256       struct gl_line_attrib *attr;
 257       attr = MALLOC_STRUCT( gl_line_attrib );
 258       MEMCPY( attr, &ctx->Line, sizeof(struct gl_line_attrib) );
 259       newnode = new_attrib_node( GL_LINE_BIT );
 260       newnode->data = attr;
 261       newnode->next = head;
 262       head = newnode;
 263    }
 264
 265    if (mask & GL_LIST_BIT) {
 266       struct gl_list_attrib *attr;
 267       attr = MALLOC_STRUCT( gl_list_attrib );
 268       MEMCPY( attr, &ctx->List, sizeof(struct gl_list_attrib) );
 269       newnode = new_attrib_node( GL_LIST_BIT );
 270       newnode->data = attr;
 271       newnode->next = head;
 272       head = newnode;
 273    }
 274
 275    if (mask & GL_PIXEL_MODE_BIT) {
 276       struct gl_pixel_attrib *attr;
 277       attr = MALLOC_STRUCT( gl_pixel_attrib );
 278       MEMCPY( attr, &ctx->Pixel, sizeof(struct gl_pixel_attrib) );
 279       /* push the Read FBO's ReadBuffer state, not ctx->Pixel.ReadBuffer */
 280       attr->ReadBuffer = ctx->ReadBuffer->ColorReadBuffer;
 281       newnode = new_attrib_node( GL_PIXEL_MODE_BIT );
 282       newnode->data = attr;
 283       newnode->next = head;
 284       head = newnode;
 285    }
 286
 287    if (mask & GL_POINT_BIT) {
 288       struct gl_point_attrib *attr;
 289       attr = MALLOC_STRUCT( gl_point_attrib );
 290       MEMCPY( attr, &ctx->Point, sizeof(struct gl_point_attrib) );
 291       newnode = new_attrib_node( GL_POINT_BIT );
 292       newnode->data = attr;
 293       newnode->next = head;
 294       head = newnode;
 295    }
 296
 297    if (mask & GL_POLYGON_BIT) {
 298       struct gl_polygon_attrib *attr;
 299       attr = MALLOC_STRUCT( gl_polygon_attrib );
 300       MEMCPY( attr, &ctx->Polygon, sizeof(struct gl_polygon_attrib) );
 301       newnode = new_attrib_node( GL_POLYGON_BIT );
 302       newnode->data = attr;
 303       newnode->next = head;
 304       head = newnode;
 305    }
 306
 307    if (mask & GL_POLYGON_STIPPLE_BIT) {
 308       GLuint *stipple;
 309       stipple = (GLuint *) MALLOC( 32*sizeof(GLuint) );
 310       MEMCPY( stipple, ctx->PolygonStipple, 32*sizeof(GLuint) );
 311       newnode = new_attrib_node( GL_POLYGON_STIPPLE_BIT );
 312       newnode->data = stipple;
 313       newnode->next = head;
 314       head = newnode;
 315    }
 316
 317    if (mask & GL_SCISSOR_BIT) {
 318       struct gl_scissor_attrib *attr;
 319       attr = MALLOC_STRUCT( gl_scissor_attrib );
 320       MEMCPY( attr, &ctx->Scissor, sizeof(struct gl_scissor_attrib) );
 321       newnode = new_attrib_node( GL_SCISSOR_BIT );
 322       newnode->data = attr;
 323       newnode->next = head;
 324       head = newnode;
 325    }
 326
 327    if (mask & GL_STENCIL_BUFFER_BIT) {
 328       struct gl_stencil_attrib *attr;
 329       attr = MALLOC_STRUCT( gl_stencil_attrib );
 330       MEMCPY( attr, &ctx->Stencil, sizeof(struct gl_stencil_attrib) );
 331       newnode = new_attrib_node( GL_STENCIL_BUFFER_BIT );
 332       newnode->data = attr;
 333       newnode->next = head;
 334       head = newnode;
 335    }
 336
 337    if (mask & GL_TEXTURE_BIT) {
 338       struct gl_texture_attrib *attr;
 339       GLuint u;
 340
 341       _mesa_lock_context_textures(ctx);
 342       /* Bump the texture object reference counts so that they don't
 343        * inadvertantly get deleted.
 344        */
 345       for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 346          ctx->Texture.Unit[u].Current1D->RefCount++;
 347          ctx->Texture.Unit[u].Current2D->RefCount++;
 348          ctx->Texture.Unit[u].Current3D->RefCount++;
 349          ctx->Texture.Unit[u].CurrentCubeMap->RefCount++;
 350          ctx->Texture.Unit[u].CurrentRect->RefCount++;
 351          ctx->Texture.Unit[u].Current1DArray->RefCount++;
 352          ctx->Texture.Unit[u].Current2DArray->RefCount++;
 353       }
 354       attr = MALLOC_STRUCT( gl_texture_attrib );
 355       MEMCPY( attr, &ctx->Texture, sizeof(struct gl_texture_attrib) );
 356       /* copy state of the currently bound texture objects */
 357       for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 358          _mesa_copy_texture_object(&attr->Unit[u].Saved1D,
 359                                    attr->Unit[u].Current1D);
 360          _mesa_copy_texture_object(&attr->Unit[u].Saved2D,
 361                                    attr->Unit[u].Current2D);
 362          _mesa_copy_texture_object(&attr->Unit[u].Saved3D,
 363                                    attr->Unit[u].Current3D);
 364          _mesa_copy_texture_object(&attr->Unit[u].SavedCubeMap,
 365                                    attr->Unit[u].CurrentCubeMap);
 366          _mesa_copy_texture_object(&attr->Unit[u].SavedRect,
 367                                    attr->Unit[u].CurrentRect);
 368          _mesa_copy_texture_object(&attr->Unit[u].Saved1DArray,
 369                                    attr->Unit[u].Current1DArray);
 370          _mesa_copy_texture_object(&attr->Unit[u].Saved2DArray,
 371                                    attr->Unit[u].Current2DArray);
 372       }
 373
 374       _mesa_unlock_context_textures(ctx);
 375
 376       newnode = new_attrib_node( GL_TEXTURE_BIT );
 377       newnode->data = attr;
 378       newnode->next = head;
 379       head = newnode;
 380    }
 381
 382    if (mask & GL_TRANSFORM_BIT) {
 383       struct gl_transform_attrib *attr;
 384       attr = MALLOC_STRUCT( gl_transform_attrib );
 385       MEMCPY( attr, &ctx->Transform, sizeof(struct gl_transform_attrib) );
 386       newnode = new_attrib_node( GL_TRANSFORM_BIT );
 387       newnode->data = attr;
 388       newnode->next = head;
 389       head = newnode;
 390    }
 391
 392    if (mask & GL_VIEWPORT_BIT) {
 393       struct gl_viewport_attrib *attr;
 394       attr = MALLOC_STRUCT( gl_viewport_attrib );
 395       MEMCPY( attr, &ctx->Viewport, sizeof(struct gl_viewport_attrib) );
 396       newnode = new_attrib_node( GL_VIEWPORT_BIT );
 397       newnode->data = attr;
 398       newnode->next = head;
 399       head = newnode;
 400    }
 401
 402    /* GL_ARB_multisample */
 403    if (mask & GL_MULTISAMPLE_BIT_ARB) {
 404       struct gl_multisample_attrib *attr;
 405       attr = MALLOC_STRUCT( gl_multisample_attrib );
 406       MEMCPY( attr, &ctx->Multisample, sizeof(struct gl_multisample_attrib) );
 407       newnode = new_attrib_node( GL_MULTISAMPLE_BIT_ARB );
 408       newnode->data = attr;
 409       newnode->next = head;
 410       head = newnode;
 411    }
 412
 413    ctx->AttribStack[ctx->AttribStackDepth] = head;
 414    ctx->AttribStackDepth++;
 415 }
 416
 417
 418
 419 static void
 420 pop_enable_group(GLcontext *ctx, const struct gl_enable_attrib *enable)
 421 {
 422    GLuint i;
 423
 424 #define TEST_AND_UPDATE(VALUE, NEWVALUE, ENUM)          \
 425         if ((VALUE) != (NEWVALUE)) {                    \
 426            _mesa_set_enable( ctx, ENUM, (NEWVALUE) );   \
 427         }
 428
 429    TEST_AND_UPDATE(ctx->Color.AlphaEnabled, enable->AlphaTest, GL_ALPHA_TEST);
 430    TEST_AND_UPDATE(ctx->Color.BlendEnabled, enable->Blend, GL_BLEND);
 431
 432    for (i=0;i<MAX_CLIP_PLANES;i++) {
 433       const GLuint mask = 1 << i;
 434       if ((ctx->Transform.ClipPlanesEnabled & mask) != (enable->ClipPlanes & mask))
 435           _mesa_set_enable(ctx, (GLenum) (GL_CLIP_PLANE0 + i),
 436                            (GLboolean) ((enable->ClipPlanes & mask) ? GL_TRUE : GL_FALSE));
 437    }
 438
 439    TEST_AND_UPDATE(ctx->Light.ColorMaterialEnabled, enable->ColorMaterial,
 440                    GL_COLOR_MATERIAL);
 441    TEST_AND_UPDATE(ctx->Pixel.ColorTableEnabled[COLORTABLE_PRECONVOLUTION],
 442                    enable->ColorTable[COLORTABLE_PRECONVOLUTION],
 443                    GL_COLOR_TABLE);
 444    TEST_AND_UPDATE(ctx->Pixel.ColorTableEnabled[COLORTABLE_POSTCONVOLUTION],
 445                    enable->ColorTable[COLORTABLE_POSTCONVOLUTION],
 446                    GL_POST_CONVOLUTION_COLOR_TABLE);
 447    TEST_AND_UPDATE(ctx->Pixel.ColorTableEnabled[COLORTABLE_POSTCOLORMATRIX],
 448                    enable->ColorTable[COLORTABLE_POSTCOLORMATRIX],
 449                    GL_POST_COLOR_MATRIX_COLOR_TABLE);
 450    TEST_AND_UPDATE(ctx->Polygon.CullFlag, enable->CullFace, GL_CULL_FACE);
 451    TEST_AND_UPDATE(ctx->Depth.Test, enable->DepthTest, GL_DEPTH_TEST);
 452    TEST_AND_UPDATE(ctx->Color.DitherFlag, enable->Dither, GL_DITHER);
 453    TEST_AND_UPDATE(ctx->Pixel.Convolution1DEnabled, enable->Convolution1D,
 454                    GL_CONVOLUTION_1D);
 455    TEST_AND_UPDATE(ctx->Pixel.Convolution2DEnabled, enable->Convolution2D,
 456                    GL_CONVOLUTION_2D);
 457    TEST_AND_UPDATE(ctx->Pixel.Separable2DEnabled, enable->Separable2D,
 458                    GL_SEPARABLE_2D);
 459    TEST_AND_UPDATE(ctx->Fog.Enabled, enable->Fog, GL_FOG);
 460    TEST_AND_UPDATE(ctx->Light.Enabled, enable->Lighting, GL_LIGHTING);
 461    TEST_AND_UPDATE(ctx->Line.SmoothFlag, enable->LineSmooth, GL_LINE_SMOOTH);
 462    TEST_AND_UPDATE(ctx->Line.StippleFlag, enable->LineStipple,
 463                    GL_LINE_STIPPLE);
 464    TEST_AND_UPDATE(ctx->Color.IndexLogicOpEnabled, enable->IndexLogicOp,
 465                    GL_INDEX_LOGIC_OP);
 466    TEST_AND_UPDATE(ctx->Color.ColorLogicOpEnabled, enable->ColorLogicOp,
 467                    GL_COLOR_LOGIC_OP);
 468
 469    TEST_AND_UPDATE(ctx->Eval.Map1Color4, enable->Map1Color4, GL_MAP1_COLOR_4);
 470    TEST_AND_UPDATE(ctx->Eval.Map1Index, enable->Map1Index, GL_MAP1_INDEX);
 471    TEST_AND_UPDATE(ctx->Eval.Map1Normal, enable->Map1Normal, GL_MAP1_NORMAL);
 472    TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord1, enable->Map1TextureCoord1,
 473                    GL_MAP1_TEXTURE_COORD_1);
 474    TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord2, enable->Map1TextureCoord2,
 475                    GL_MAP1_TEXTURE_COORD_2);
 476    TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord3, enable->Map1TextureCoord3,
 477                    GL_MAP1_TEXTURE_COORD_3);
 478    TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord4, enable->Map1TextureCoord4,
 479                    GL_MAP1_TEXTURE_COORD_4);
 480    TEST_AND_UPDATE(ctx->Eval.Map1Vertex3, enable->Map1Vertex3,
 481                    GL_MAP1_VERTEX_3);
 482    TEST_AND_UPDATE(ctx->Eval.Map1Vertex4, enable->Map1Vertex4,
 483                    GL_MAP1_VERTEX_4);
 484    for (i = 0; i < 16; i++) {
 485       TEST_AND_UPDATE(ctx->Eval.Map1Attrib[i], enable->Map1Attrib[i],
 486                       GL_MAP1_VERTEX_ATTRIB0_4_NV + i);
 487    }
 488
 489    TEST_AND_UPDATE(ctx->Eval.Map2Color4, enable->Map2Color4, GL_MAP2_COLOR_4);
 490    TEST_AND_UPDATE(ctx->Eval.Map2Index, enable->Map2Index, GL_MAP2_INDEX);
 491    TEST_AND_UPDATE(ctx->Eval.Map2Normal, enable->Map2Normal, GL_MAP2_NORMAL);
 492    TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord1, enable->Map2TextureCoord1,
 493                    GL_MAP2_TEXTURE_COORD_1);
 494    TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord2, enable->Map2TextureCoord2,
 495                    GL_MAP2_TEXTURE_COORD_2);
 496    TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord3, enable->Map2TextureCoord3,
 497                    GL_MAP2_TEXTURE_COORD_3);
 498    TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord4, enable->Map2TextureCoord4,
 499                    GL_MAP2_TEXTURE_COORD_4);
 500    TEST_AND_UPDATE(ctx->Eval.Map2Vertex3, enable->Map2Vertex3,
 501                    GL_MAP2_VERTEX_3);
 502    TEST_AND_UPDATE(ctx->Eval.Map2Vertex4, enable->Map2Vertex4,
 503                    GL_MAP2_VERTEX_4);
 504    for (i = 0; i < 16; i++) {
 505       TEST_AND_UPDATE(ctx->Eval.Map2Attrib[i], enable->Map2Attrib[i],
 506                       GL_MAP2_VERTEX_ATTRIB0_4_NV + i);
 507    }
 508
 509    TEST_AND_UPDATE(ctx->Eval.AutoNormal, enable->AutoNormal, GL_AUTO_NORMAL);
 510    TEST_AND_UPDATE(ctx->Transform.Normalize, enable->Normalize, GL_NORMALIZE);
 511    TEST_AND_UPDATE(ctx->Transform.RescaleNormals, enable->RescaleNormals,
 512                    GL_RESCALE_NORMAL_EXT);
 513    TEST_AND_UPDATE(ctx->Transform.RasterPositionUnclipped,
 514                    enable->RasterPositionUnclipped,
 515                    GL_RASTER_POSITION_UNCLIPPED_IBM);
 516    TEST_AND_UPDATE(ctx->Point.SmoothFlag, enable->PointSmooth,
 517                    GL_POINT_SMOOTH);
 518    if (ctx->Extensions.NV_point_sprite || ctx->Extensions.ARB_point_sprite) {
 519       TEST_AND_UPDATE(ctx->Point.PointSprite, enable->PointSprite,
 520                       GL_POINT_SPRITE_NV);
 521    }
 522    TEST_AND_UPDATE(ctx->Polygon.OffsetPoint, enable->PolygonOffsetPoint,
 523                    GL_POLYGON_OFFSET_POINT);
 524    TEST_AND_UPDATE(ctx->Polygon.OffsetLine, enable->PolygonOffsetLine,
 525                    GL_POLYGON_OFFSET_LINE);
 526    TEST_AND_UPDATE(ctx->Polygon.OffsetFill, enable->PolygonOffsetFill,
 527                    GL_POLYGON_OFFSET_FILL);
 528    TEST_AND_UPDATE(ctx->Polygon.SmoothFlag, enable->PolygonSmooth,
 529                    GL_POLYGON_SMOOTH);
 530    TEST_AND_UPDATE(ctx->Polygon.StippleFlag, enable->PolygonStipple,
 531                    GL_POLYGON_STIPPLE);
 532    TEST_AND_UPDATE(ctx->Scissor.Enabled, enable->Scissor, GL_SCISSOR_TEST);
 533    TEST_AND_UPDATE(ctx->Stencil.Enabled, enable->Stencil, GL_STENCIL_TEST);
 534    if (ctx->Extensions.EXT_stencil_two_side) {
 535       TEST_AND_UPDATE(ctx->Stencil.TestTwoSide, enable->StencilTwoSide, GL_STENCIL_TEST_TWO_SIDE_EXT);
 536    }
 537    TEST_AND_UPDATE(ctx->Multisample.Enabled, enable->MultisampleEnabled,
 538                    GL_MULTISAMPLE_ARB);
 539    TEST_AND_UPDATE(ctx->Multisample.SampleAlphaToCoverage,
 540                    enable->SampleAlphaToCoverage,
 541                    GL_SAMPLE_ALPHA_TO_COVERAGE_ARB);
 542    TEST_AND_UPDATE(ctx->Multisample.SampleAlphaToOne,
 543                    enable->SampleAlphaToOne,
 544                    GL_SAMPLE_ALPHA_TO_ONE_ARB);
 545    TEST_AND_UPDATE(ctx->Multisample.SampleCoverage,
 546                    enable->SampleCoverage,
 547                    GL_SAMPLE_COVERAGE_ARB);
 548    TEST_AND_UPDATE(ctx->Multisample.SampleCoverageInvert,
 549                    enable->SampleCoverageInvert,
 550                    GL_SAMPLE_COVERAGE_INVERT_ARB);
 551    /* GL_ARB_vertex_program, GL_NV_vertex_program */
 552    TEST_AND_UPDATE(ctx->VertexProgram.Enabled,
 553                    enable->VertexProgram,
 554                    GL_VERTEX_PROGRAM_ARB);
 555    TEST_AND_UPDATE(ctx->VertexProgram.PointSizeEnabled,
 556                    enable->VertexProgramPointSize,
 557                    GL_VERTEX_PROGRAM_POINT_SIZE_ARB);
 558    TEST_AND_UPDATE(ctx->VertexProgram.TwoSideEnabled,
 559                    enable->VertexProgramTwoSide,
 560                    GL_VERTEX_PROGRAM_TWO_SIDE_ARB);
 561
 562 #undef TEST_AND_UPDATE
 563
 564    /* texture unit enables */
 565    for (i = 0; i < ctx->Const.MaxTextureUnits; i++) {
 566       if (ctx->Texture.Unit[i].Enabled != enable->Texture[i]) {
 567          ctx->Texture.Unit[i].Enabled = enable->Texture[i];
 568          if (ctx->Driver.Enable) {
 569             if (ctx->Driver.ActiveTexture) {
 570                (*ctx->Driver.ActiveTexture)(ctx, i);
 571             }
 572             (*ctx->Driver.Enable)( ctx, GL_TEXTURE_1D,
 573                              (GLboolean) (enable->Texture[i] & TEXTURE_1D_BIT) );
 574             (*ctx->Driver.Enable)( ctx, GL_TEXTURE_2D,
 575                              (GLboolean) (enable->Texture[i] & TEXTURE_2D_BIT) );
 576             (*ctx->Driver.Enable)( ctx, GL_TEXTURE_3D,
 577                              (GLboolean) (enable->Texture[i] & TEXTURE_3D_BIT) );
 578             if (ctx->Extensions.ARB_texture_cube_map)
 579                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_CUBE_MAP_ARB,
 580                           (GLboolean) (enable->Texture[i] & TEXTURE_CUBE_BIT) );
 581             if (ctx->Extensions.NV_texture_rectangle)
 582                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_RECTANGLE_NV,
 583                           (GLboolean) (enable->Texture[i] & TEXTURE_RECT_BIT) );
 584          }
 585       }
 586
 587       if (ctx->Texture.Unit[i].TexGenEnabled != enable->TexGen[i]) {
 588          ctx->Texture.Unit[i].TexGenEnabled = enable->TexGen[i];
 589          if (ctx->Driver.Enable) {
 590             if (ctx->Driver.ActiveTexture) {
 591                (*ctx->Driver.ActiveTexture)(ctx, i);
 592             }
 593             if (enable->TexGen[i] & S_BIT)
 594                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_S, GL_TRUE);
 595             else
 596                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_S, GL_FALSE);
 597             if (enable->TexGen[i] & T_BIT)
 598                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_T, GL_TRUE);
 599             else
 600                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_T, GL_FALSE);
 601             if (enable->TexGen[i] & R_BIT)
 602                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_R, GL_TRUE);
 603             else
 604                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_R, GL_FALSE);
 605             if (enable->TexGen[i] & Q_BIT)
 606                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_Q, GL_TRUE);
 607             else
 608                (*ctx->Driver.Enable)( ctx, GL_TEXTURE_GEN_Q, GL_FALSE);
 609          }
 610       }
 611
 612       /* GL_SGI_texture_color_table */
 613       ctx->Texture.Unit[i].ColorTableEnabled = enable->TextureColorTable[i];
 614    }
 615
 616    if (ctx->Driver.ActiveTexture) {
 617       (*ctx->Driver.ActiveTexture)(ctx, ctx->Texture.CurrentUnit);
 618    }
 619 }
 620
 621
 622 static void
 623 pop_texture_group(GLcontext *ctx, const struct gl_texture_attrib *texAttrib)
 624 {
 625    GLuint u;
 626
 627    for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 628       const struct gl_texture_unit *unit = &texAttrib->Unit[u];
 629       GLuint i;
 630
 631       _mesa_ActiveTextureARB(GL_TEXTURE0_ARB + u);
 632       _mesa_set_enable(ctx, GL_TEXTURE_1D,
 633                        (unit->Enabled & TEXTURE_1D_BIT) ? GL_TRUE : GL_FALSE);
 634       _mesa_set_enable(ctx, GL_TEXTURE_2D,
 635                        (unit->Enabled & TEXTURE_2D_BIT) ? GL_TRUE : GL_FALSE);
 636       _mesa_set_enable(ctx, GL_TEXTURE_3D,
 637                        (unit->Enabled & TEXTURE_3D_BIT) ? GL_TRUE : GL_FALSE);
 638       if (ctx->Extensions.ARB_texture_cube_map) {
 639          _mesa_set_enable(ctx, GL_TEXTURE_CUBE_MAP_ARB,
 640                      (unit->Enabled & TEXTURE_CUBE_BIT) ? GL_TRUE : GL_FALSE);
 641       }
 642       if (ctx->Extensions.NV_texture_rectangle) {
 643          _mesa_set_enable(ctx, GL_TEXTURE_RECTANGLE_NV,
 644                      (unit->Enabled & TEXTURE_RECT_BIT) ? GL_TRUE : GL_FALSE);
 645       }
 646       if (ctx->Extensions.SGI_texture_color_table) {
 647          _mesa_set_enable(ctx, GL_TEXTURE_COLOR_TABLE_SGI,
 648                           unit->ColorTableEnabled);
 649       }
 650       _mesa_TexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, unit->EnvMode);
 651       _mesa_TexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, unit->EnvColor);
 652       _mesa_TexGeni(GL_S, GL_TEXTURE_GEN_MODE, unit->GenModeS);
 653       _mesa_TexGeni(GL_T, GL_TEXTURE_GEN_MODE, unit->GenModeT);
 654       _mesa_TexGeni(GL_R, GL_TEXTURE_GEN_MODE, unit->GenModeR);
 655       _mesa_TexGeni(GL_Q, GL_TEXTURE_GEN_MODE, unit->GenModeQ);
 656       _mesa_TexGenfv(GL_S, GL_OBJECT_PLANE, unit->ObjectPlaneS);
 657       _mesa_TexGenfv(GL_T, GL_OBJECT_PLANE, unit->ObjectPlaneT);
 658       _mesa_TexGenfv(GL_R, GL_OBJECT_PLANE, unit->ObjectPlaneR);
 659       _mesa_TexGenfv(GL_Q, GL_OBJECT_PLANE, unit->ObjectPlaneQ);
 660       /* Eye plane done differently to avoid re-transformation */
 661       {
 662          struct gl_texture_unit *destUnit = &ctx->Texture.Unit[u];
 663          COPY_4FV(destUnit->EyePlaneS, unit->EyePlaneS);
 664          COPY_4FV(destUnit->EyePlaneT, unit->EyePlaneT);
 665          COPY_4FV(destUnit->EyePlaneR, unit->EyePlaneR);
 666          COPY_4FV(destUnit->EyePlaneQ, unit->EyePlaneQ);
 667          if (ctx->Driver.TexGen) {
 668             ctx->Driver.TexGen(ctx, GL_S, GL_EYE_PLANE, unit->EyePlaneS);
 669             ctx->Driver.TexGen(ctx, GL_T, GL_EYE_PLANE, unit->EyePlaneT);
 670             ctx->Driver.TexGen(ctx, GL_R, GL_EYE_PLANE, unit->EyePlaneR);
 671             ctx->Driver.TexGen(ctx, GL_Q, GL_EYE_PLANE, unit->EyePlaneQ);
 672          }
 673       }
 674       _mesa_set_enable(ctx, GL_TEXTURE_GEN_S,
 675                        ((unit->TexGenEnabled & S_BIT) ? GL_TRUE : GL_FALSE));
 676       _mesa_set_enable(ctx, GL_TEXTURE_GEN_T,
 677                        ((unit->TexGenEnabled & T_BIT) ? GL_TRUE : GL_FALSE));
 678       _mesa_set_enable(ctx, GL_TEXTURE_GEN_R,
 679                        ((unit->TexGenEnabled & R_BIT) ? GL_TRUE : GL_FALSE));
 680       _mesa_set_enable(ctx, GL_TEXTURE_GEN_Q,
 681                        ((unit->TexGenEnabled & Q_BIT) ? GL_TRUE : GL_FALSE));
 682       if (ctx->Extensions.EXT_texture_lod_bias) {
 683          _mesa_TexEnvf(GL_TEXTURE_FILTER_CONTROL_EXT,
 684                        GL_TEXTURE_LOD_BIAS_EXT, unit->LodBias);
 685       }
 686       if (ctx->Extensions.EXT_texture_env_combine ||
 687           ctx->Extensions.ARB_texture_env_combine) {
 688          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB,
 689                        unit->Combine.ModeRGB);
 690          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA,
 691                        unit->Combine.ModeA);
 692          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB,
 693                        unit->Combine.SourceRGB[0]);
 694          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB,
 695                        unit->Combine.SourceRGB[1]);
 696          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_RGB,
 697                        unit->Combine.SourceRGB[2]);
 698          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA,
 699                        unit->Combine.SourceA[0]);
 700          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_ALPHA,
 701                        unit->Combine.SourceA[1]);
 702          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_ALPHA,
 703                        unit->Combine.SourceA[2]);
 704          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB,
 705                        unit->Combine.OperandRGB[0]);
 706          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB,
 707                        unit->Combine.OperandRGB[1]);
 708          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_RGB,
 709                        unit->Combine.OperandRGB[2]);
 710          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA,
 711                        unit->Combine.OperandA[0]);
 712          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_ALPHA,
 713                        unit->Combine.OperandA[1]);
 714          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_ALPHA,
 715                        unit->Combine.OperandA[2]);
 716          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE,
 717                        1 << unit->Combine.ScaleShiftRGB);
 718          _mesa_TexEnvi(GL_TEXTURE_ENV, GL_ALPHA_SCALE,
 719                        1 << unit->Combine.ScaleShiftA);
 720       }
 721
 722       /* Restore texture object state */
 723       for (i = 0; i < NUM_TEXTURE_TARGETS; i++) {
 724          GLenum target = 0;
 725          const struct gl_texture_object *obj = NULL;
 726          GLfloat bordColor[4];
 727
 728          switch (i) {
 729          case 0:
 730             target = GL_TEXTURE_1D;
 731             obj = &unit->Saved1D;
 732             break;
 733          case 1:
 734             target = GL_TEXTURE_2D;
 735             obj = &unit->Saved2D;
 736             break;
 737          case 2:
 738             target = GL_TEXTURE_3D;
 739             obj = &unit->Saved3D;
 740             break;
 741          case 3:
 742             if (!ctx->Extensions.ARB_texture_cube_map)
 743                continue;
 744             target = GL_TEXTURE_CUBE_MAP_ARB;
 745             obj = &unit->SavedCubeMap;
 746             break;
 747          case 4:
 748             if (!ctx->Extensions.NV_texture_rectangle)
 749                continue;
 750             target = GL_TEXTURE_RECTANGLE_NV;
 751             obj = &unit->SavedRect;
 752             break;
 753          case 5:
 754             if (!ctx->Extensions.MESA_texture_array)
 755                continue;
 756             target = GL_TEXTURE_1D_ARRAY_EXT;
 757             obj = &unit->Saved1DArray;
 758             break;
 759          case 6:
 760             if (!ctx->Extensions.MESA_texture_array)
 761                continue;
 762             target = GL_TEXTURE_2D_ARRAY_EXT;
 763             obj = &unit->Saved2DArray;
 764             break;
 765          default:
 766             ; /* silence warnings */
 767          }
 768
 769          _mesa_BindTexture(target, obj->Name);
 770
 771          bordColor[0] = CHAN_TO_FLOAT(obj->BorderColor[0]);
 772          bordColor[1] = CHAN_TO_FLOAT(obj->BorderColor[1]);
 773          bordColor[2] = CHAN_TO_FLOAT(obj->BorderColor[2]);
 774          bordColor[3] = CHAN_TO_FLOAT(obj->BorderColor[3]);
 775
 776          _mesa_TexParameterf(target, GL_TEXTURE_PRIORITY, obj->Priority);
 777          _mesa_TexParameterfv(target, GL_TEXTURE_BORDER_COLOR, bordColor);
 778          _mesa_TexParameteri(target, GL_TEXTURE_WRAP_S, obj->WrapS);
 779          _mesa_TexParameteri(target, GL_TEXTURE_WRAP_T, obj->WrapT);
 780          _mesa_TexParameteri(target, GL_TEXTURE_WRAP_R, obj->WrapR);
 781          _mesa_TexParameteri(target, GL_TEXTURE_MIN_FILTER, obj->MinFilter);
 782          _mesa_TexParameteri(target, GL_TEXTURE_MAG_FILTER, obj->MagFilter);
 783          _mesa_TexParameterf(target, GL_TEXTURE_MIN_LOD, obj->MinLod);
 784          _mesa_TexParameterf(target, GL_TEXTURE_MAX_LOD, obj->MaxLod);
 785          _mesa_TexParameterf(target, GL_TEXTURE_LOD_BIAS, obj->LodBias);
 786          _mesa_TexParameteri(target, GL_TEXTURE_BASE_LEVEL, obj->BaseLevel);
 787          if (target != GL_TEXTURE_RECTANGLE_ARB)
 788             _mesa_TexParameteri(target, GL_TEXTURE_MAX_LEVEL, obj->MaxLevel);
 789          if (ctx->Extensions.EXT_texture_filter_anisotropic) {
 790             _mesa_TexParameterf(target, GL_TEXTURE_MAX_ANISOTROPY_EXT,
 791                                 obj->MaxAnisotropy);
 792          }
 793          if (ctx->Extensions.SGIX_shadow) {
 794             _mesa_TexParameteri(target, GL_TEXTURE_COMPARE_SGIX,
 795                                 obj->CompareFlag);
 796             _mesa_TexParameteri(target, GL_TEXTURE_COMPARE_OPERATOR_SGIX,
 797                                 obj->CompareOperator);
 798          }
 799          if (ctx->Extensions.SGIX_shadow_ambient) {
 800             _mesa_TexParameterf(target, GL_SHADOW_AMBIENT_SGIX,
 801                                 obj->ShadowAmbient);
 802          }
 803
 804       }
 805    }
 806    _mesa_ActiveTextureARB(GL_TEXTURE0_ARB
 807                           + texAttrib->CurrentUnit);
 808
 809    /* "un-bump" the texture object reference counts.  We did that so they
 810     * wouldn't inadvertantly get deleted while they were still referenced
 811     * inside the attribute state stack.
 812     */
 813    for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
 814       ctx->Texture.Unit[u].Current1D->RefCount--;
 815       ctx->Texture.Unit[u].Current2D->RefCount--;
 816       ctx->Texture.Unit[u].Current3D->RefCount--;
 817       ctx->Texture.Unit[u].CurrentCubeMap->RefCount--;
 818       ctx->Texture.Unit[u].CurrentRect->RefCount--;
 819       ctx->Texture.Unit[u].Current1DArray->RefCount--;
 820       ctx->Texture.Unit[u].Current2DArray->RefCount--;
 821    }
 822 }
 823
 824
 825 /*
 826  * This function is kind of long just because we have to call a lot
 827  * of device driver functions to update device driver state.
 828  *
 829  * XXX As it is now, most of the pop-code calls immediate-mode Mesa functions
 830  * in order to restore GL state.  This isn't terribly efficient but it
 831  * ensures that dirty flags and any derived state gets updated correctly.
 832  * We could at least check if the value to restore equals the current value
 833  * and then skip the Mesa call.
 834  */
 835 void GLAPIENTRY
 836 _mesa_PopAttrib(void)
 837 {
 838    struct gl_attrib_node *attr, *next;
 839    GET_CURRENT_CONTEXT(ctx);
 840    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 841
 842    if (ctx->AttribStackDepth == 0) {
 843       _mesa_error( ctx, GL_STACK_UNDERFLOW, "glPopAttrib" );
 844       return;
 845    }
 846
 847    ctx->AttribStackDepth--;
 848    attr = ctx->AttribStack[ctx->AttribStackDepth];
 849
 850    while (attr) {
 851
 852       if (MESA_VERBOSE & VERBOSE_API) {
 853          _mesa_debug(ctx, "glPopAttrib %s\n",
 854                      _mesa_lookup_enum_by_nr(attr->kind));
 855       }
 856
 857       switch (attr->kind) {
 858          case GL_ACCUM_BUFFER_BIT:
 859             {
 860                const struct gl_accum_attrib *accum;
 861                accum = (const struct gl_accum_attrib *) attr->data;
 862                _mesa_ClearAccum(accum->ClearColor[0],
 863                                 accum->ClearColor[1],
 864                                 accum->ClearColor[2],
 865                                 accum->ClearColor[3]);
 866             }
 867             break;
 868          case GL_COLOR_BUFFER_BIT:
 869             {
 870                const struct gl_colorbuffer_attrib *color;
 871                color = (const struct gl_colorbuffer_attrib *) attr->data;
 872                _mesa_ClearIndex((GLfloat) color->ClearIndex);
 873                _mesa_ClearColor(color->ClearColor[0],
 874                                 color->ClearColor[1],
 875                                 color->ClearColor[2],
 876                                 color->ClearColor[3]);
 877                _mesa_IndexMask(color->IndexMask);
 878                _mesa_ColorMask((GLboolean) (color->ColorMask[0] != 0),
 879                                (GLboolean) (color->ColorMask[1] != 0),
 880                                (GLboolean) (color->ColorMask[2] != 0),
 881                                (GLboolean) (color->ColorMask[3] != 0));
 882                {
 883                   /* Need to determine if more than one color output is
 884                    * specified.  If so, call glDrawBuffersARB, else call
 885                    * glDrawBuffer().  This is a subtle, but essential point
 886                    * since GL_FRONT (for example) is illegal for the former
 887                    * function, but legal for the later.
 888                    */
 889                   GLboolean multipleBuffers = GL_FALSE;
 890                   if (ctx->Extensions.ARB_draw_buffers) {
 891                      GLuint i;
 892                      for (i = 1; i < ctx->Const.MaxDrawBuffers; i++) {
 893                         if (color->DrawBuffer[i] != GL_NONE) {
 894                            multipleBuffers = GL_TRUE;
 895                            break;
 896                         }
 897                      }
 898                   }
 899                   /* Call the API_level functions, not _mesa_drawbuffers()
 900                    * since we need to do error checking on the pop'd
 901                    * GL_DRAW_BUFFER.
 902                    * Ex: if GL_FRONT were pushed, but we're popping with a
 903                    * user FBO bound, GL_FRONT will be illegal and we'll need
 904                    * to record that error.  Per OpenGL ARB decision.
 905                    */
 906                   if (multipleBuffers)
 907                      _mesa_DrawBuffersARB(ctx->Const.MaxDrawBuffers,
 908                                           color->DrawBuffer);
 909                   else
 910                      _mesa_DrawBuffer(color->DrawBuffer[0]);
 911                }
 912                _mesa_set_enable(ctx, GL_ALPHA_TEST, color->AlphaEnabled);
 913                _mesa_AlphaFunc(color->AlphaFunc, color->AlphaRef);
 914                _mesa_set_enable(ctx, GL_BLEND, color->BlendEnabled);
 915                _mesa_BlendFuncSeparateEXT(color->BlendSrcRGB,
 916                                           color->BlendDstRGB,
 917                                           color->BlendSrcA,
 918                                           color->BlendDstA);
 919                /* This special case is because glBlendEquationSeparateEXT
 920                 * cannot take GL_LOGIC_OP as a parameter.
 921                 */
 922                if ( color->BlendEquationRGB == color->BlendEquationA ) {
 923                   _mesa_BlendEquation(color->BlendEquationRGB);
 924                }
 925                else {
 926                   _mesa_BlendEquationSeparateEXT(color->BlendEquationRGB,
 927                                                  color->BlendEquationA);
 928                }
 929                _mesa_BlendColor(color->BlendColor[0],
 930                                 color->BlendColor[1],
 931                                 color->BlendColor[2],
 932                                 color->BlendColor[3]);
 933                _mesa_LogicOp(color->LogicOp);
 934                _mesa_set_enable(ctx, GL_COLOR_LOGIC_OP,
 935                                 color->ColorLogicOpEnabled);
 936                _mesa_set_enable(ctx, GL_INDEX_LOGIC_OP,
 937                                 color->IndexLogicOpEnabled);
 938                _mesa_set_enable(ctx, GL_DITHER, color->DitherFlag);
 939             }
 940             break;
 941          case GL_CURRENT_BIT:
 942             FLUSH_CURRENT( ctx, 0 );
 943             MEMCPY( &ctx->Current, attr->data,
 944                     sizeof(struct gl_current_attrib) );
 945             break;
 946          case GL_DEPTH_BUFFER_BIT:
 947             {
 948                const struct gl_depthbuffer_attrib *depth;
 949                depth = (const struct gl_depthbuffer_attrib *) attr->data;
 950                _mesa_DepthFunc(depth->Func);
 951                _mesa_ClearDepth(depth->Clear);
 952                _mesa_set_enable(ctx, GL_DEPTH_TEST, depth->Test);
 953                _mesa_DepthMask(depth->Mask);
 954             }
 955             break;
 956          case GL_ENABLE_BIT:
 957             {
 958                const struct gl_enable_attrib *enable;
 959                enable = (const struct gl_enable_attrib *) attr->data;
 960                pop_enable_group(ctx, enable);
 961                ctx->NewState |= _NEW_ALL;
 962             }
 963             break;
 964          case GL_EVAL_BIT:
 965             MEMCPY( &ctx->Eval, attr->data, sizeof(struct gl_eval_attrib) );
 966             ctx->NewState |= _NEW_EVAL;
 967             break;
 968          case GL_FOG_BIT:
 969             {
 970                const struct gl_fog_attrib *fog;
 971                fog = (const struct gl_fog_attrib *) attr->data;
 972                _mesa_set_enable(ctx, GL_FOG, fog->Enabled);
 973                _mesa_Fogfv(GL_FOG_COLOR, fog->Color);
 974                _mesa_Fogf(GL_FOG_DENSITY, fog->Density);
 975                _mesa_Fogf(GL_FOG_START, fog->Start);
 976                _mesa_Fogf(GL_FOG_END, fog->End);
 977                _mesa_Fogf(GL_FOG_INDEX, fog->Index);
 978                _mesa_Fogi(GL_FOG_MODE, fog->Mode);
 979             }
 980             break;
 981          case GL_HINT_BIT:
 982             {
 983                const struct gl_hint_attrib *hint;
 984                hint = (const struct gl_hint_attrib *) attr->data;
 985                _mesa_Hint(GL_PERSPECTIVE_CORRECTION_HINT,
 986                           hint->PerspectiveCorrection );
 987                _mesa_Hint(GL_POINT_SMOOTH_HINT, hint->PointSmooth);
 988                _mesa_Hint(GL_LINE_SMOOTH_HINT, hint->LineSmooth);
 989                _mesa_Hint(GL_POLYGON_SMOOTH_HINT, hint->PolygonSmooth);
 990                _mesa_Hint(GL_FOG_HINT, hint->Fog);
 991                _mesa_Hint(GL_CLIP_VOLUME_CLIPPING_HINT_EXT,
 992                           hint->ClipVolumeClipping);
 993                if (ctx->Extensions.ARB_texture_compression)
 994                   _mesa_Hint(GL_TEXTURE_COMPRESSION_HINT_ARB,
 995                              hint->TextureCompression);
 996             }
 997             break;
 998          case GL_LIGHTING_BIT:
 999             {
1000                GLuint i;
1001                const struct gl_light_attrib *light;
1002                light = (const struct gl_light_attrib *) attr->data;
1003                /* lighting enable */
1004                _mesa_set_enable(ctx, GL_LIGHTING, light->Enabled);
1005                /* per-light state */
1006                if (_math_matrix_is_dirty(ctx->ModelviewMatrixStack.Top))
1007                   _math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
1008
1009                for (i = 0; i < ctx->Const.MaxLights; i++) {
1010                   const struct gl_light *l = &light->Light[i];
1011                   _mesa_set_enable(ctx, GL_LIGHT0 + i, l->Enabled);
1012                   _mesa_light(ctx, i, GL_AMBIENT, l->Ambient);
1013                   _mesa_light(ctx, i, GL_DIFFUSE, l->Diffuse);
1014                   _mesa_light(ctx, i, GL_SPECULAR, l->Specular );
1015                   _mesa_light(ctx, i, GL_POSITION, l->EyePosition);
1016                   _mesa_light(ctx, i, GL_SPOT_DIRECTION, l->EyeDirection);
1017                   _mesa_light(ctx, i, GL_SPOT_EXPONENT, &l->SpotExponent);
1018                   _mesa_light(ctx, i, GL_SPOT_CUTOFF, &l->SpotCutoff);
1019                   _mesa_light(ctx, i, GL_CONSTANT_ATTENUATION,
1020                               &l->ConstantAttenuation);
1021                   _mesa_light(ctx, i, GL_LINEAR_ATTENUATION,
1022                               &l->LinearAttenuation);
1023                   _mesa_light(ctx, i, GL_QUADRATIC_ATTENUATION,
1024                               &l->QuadraticAttenuation);
1025                }
1026                /* light model */
1027                _mesa_LightModelfv(GL_LIGHT_MODEL_AMBIENT,
1028                                   light->Model.Ambient);
1029                _mesa_LightModelf(GL_LIGHT_MODEL_LOCAL_VIEWER,
1030                                  (GLfloat) light->Model.LocalViewer);
1031                _mesa_LightModelf(GL_LIGHT_MODEL_TWO_SIDE,
1032                                  (GLfloat) light->Model.TwoSide);
1033                _mesa_LightModelf(GL_LIGHT_MODEL_COLOR_CONTROL,
1034                                  (GLfloat) light->Model.ColorControl);
1035                /* shade model */
1036                _mesa_ShadeModel(light->ShadeModel);
1037                /* color material */
1038                _mesa_ColorMaterial(light->ColorMaterialFace,
1039                                    light->ColorMaterialMode);
1040                _mesa_set_enable(ctx, GL_COLOR_MATERIAL,
1041                                 light->ColorMaterialEnabled);
1042                /* materials */
1043                MEMCPY(&ctx->Light.Material, &light->Material,
1044                       sizeof(struct gl_material));
1045             }
1046             break;
1047          case GL_LINE_BIT:
1048             {
1049                const struct gl_line_attrib *line;
1050                line = (const struct gl_line_attrib *) attr->data;
1051                _mesa_set_enable(ctx, GL_LINE_SMOOTH, line->SmoothFlag);
1052                _mesa_set_enable(ctx, GL_LINE_STIPPLE, line->StippleFlag);
1053                _mesa_LineStipple(line->StippleFactor, line->StipplePattern);
1054                _mesa_LineWidth(line->Width);
1055             }
1056             break;
1057          case GL_LIST_BIT:
1058             MEMCPY( &ctx->List, attr->data, sizeof(struct gl_list_attrib) );
1059             break;
1060          case GL_PIXEL_MODE_BIT:
1061             MEMCPY( &ctx->Pixel, attr->data, sizeof(struct gl_pixel_attrib) );
1062             /* XXX what other pixel state needs to be set by function calls? */
1063             _mesa_ReadBuffer(ctx->Pixel.ReadBuffer);
1064             ctx->NewState |= _NEW_PIXEL;
1065             break;
1066          case GL_POINT_BIT:
1067             {
1068                const struct gl_point_attrib *point;
1069                point = (const struct gl_point_attrib *) attr->data;
1070                _mesa_PointSize(point->Size);
1071                _mesa_set_enable(ctx, GL_POINT_SMOOTH, point->SmoothFlag);
1072                if (ctx->Extensions.EXT_point_parameters) {
1073                   _mesa_PointParameterfvEXT(GL_DISTANCE_ATTENUATION_EXT,
1074                                             point->Params);
1075                   _mesa_PointParameterfEXT(GL_POINT_SIZE_MIN_EXT,
1076                                            point->MinSize);
1077                   _mesa_PointParameterfEXT(GL_POINT_SIZE_MAX_EXT,
1078                                            point->MaxSize);
1079                   _mesa_PointParameterfEXT(GL_POINT_FADE_THRESHOLD_SIZE_EXT,
1080                                            point->Threshold);
1081                }
1082                if (ctx->Extensions.NV_point_sprite
1083                    || ctx->Extensions.ARB_point_sprite) {
1084                   GLuint u;
1085                   for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
1086                      _mesa_TexEnvi(GL_POINT_SPRITE_NV, GL_COORD_REPLACE_NV,
1087                                    (GLint) point->CoordReplace[u]);
1088                   }
1089                   _mesa_set_enable(ctx, GL_POINT_SPRITE_NV,point->PointSprite);
1090                   _mesa_PointParameteriNV(GL_POINT_SPRITE_R_MODE_NV,
1091                                           ctx->Point.SpriteRMode);
1092                   _mesa_PointParameterfEXT(GL_POINT_SPRITE_COORD_ORIGIN,
1093                                            (GLfloat)ctx->Point.SpriteOrigin);
1094                }
1095             }
1096             break;
1097          case GL_POLYGON_BIT:
1098             {
1099                const struct gl_polygon_attrib *polygon;
1100                polygon = (const struct gl_polygon_attrib *) attr->data;
1101                _mesa_CullFace(polygon->CullFaceMode);
1102                _mesa_FrontFace(polygon->FrontFace);
1103                _mesa_PolygonMode(GL_FRONT, polygon->FrontMode);
1104                _mesa_PolygonMode(GL_BACK, polygon->BackMode);
1105                _mesa_PolygonOffset(polygon->OffsetFactor,
1106                                    polygon->OffsetUnits);
1107                _mesa_set_enable(ctx, GL_POLYGON_SMOOTH, polygon->SmoothFlag);
1108                _mesa_set_enable(ctx, GL_POLYGON_STIPPLE, polygon->StippleFlag);
1109                _mesa_set_enable(ctx, GL_CULL_FACE, polygon->CullFlag);
1110                _mesa_set_enable(ctx, GL_POLYGON_OFFSET_POINT,
1111                                 polygon->OffsetPoint);
1112                _mesa_set_enable(ctx, GL_POLYGON_OFFSET_LINE,
1113                                 polygon->OffsetLine);
1114                _mesa_set_enable(ctx, GL_POLYGON_OFFSET_FILL,
1115                                 polygon->OffsetFill);
1116             }
1117             break;
1118          case GL_POLYGON_STIPPLE_BIT:
1119             MEMCPY( ctx->PolygonStipple, attr->data, 32*sizeof(GLuint) );
1120             ctx->NewState |= _NEW_POLYGONSTIPPLE;
1121             if (ctx->Driver.PolygonStipple)
1122                ctx->Driver.PolygonStipple( ctx, (const GLubyte *) attr->data );
1123             break;
1124          case GL_SCISSOR_BIT:
1125             {
1126                const struct gl_scissor_attrib *scissor;
1127                scissor = (const struct gl_scissor_attrib *) attr->data;
1128                _mesa_Scissor(scissor->X, scissor->Y,
1129                              scissor->Width, scissor->Height);
1130                _mesa_set_enable(ctx, GL_SCISSOR_TEST, scissor->Enabled);
1131             }
1132             break;
1133          case GL_STENCIL_BUFFER_BIT:
1134             {
1135                const struct gl_stencil_attrib *stencil;
1136                stencil = (const struct gl_stencil_attrib *) attr->data;
1137                _mesa_set_enable(ctx, GL_STENCIL_TEST, stencil->Enabled);
1138                _mesa_ClearStencil(stencil->Clear);
1139                if (ctx->Extensions.EXT_stencil_two_side) {
1140                   _mesa_set_enable(ctx, GL_STENCIL_TEST_TWO_SIDE_EXT,
1141                                    stencil->TestTwoSide);
1142                   _mesa_ActiveStencilFaceEXT(stencil->ActiveFace
1143                                              ? GL_BACK : GL_FRONT);
1144                }
1145                /* front state */
1146                _mesa_StencilFuncSeparate(GL_FRONT,
1147                                          stencil->Function[0],
1148                                          stencil->Ref[0],
1149                                          stencil->ValueMask[0]);
1150                _mesa_StencilMaskSeparate(GL_FRONT, stencil->WriteMask[0]);
1151                _mesa_StencilOpSeparate(GL_FRONT, stencil->FailFunc[0],
1152                                        stencil->ZFailFunc[0],
1153                                        stencil->ZPassFunc[0]);
1154                /* back state */
1155                _mesa_StencilFuncSeparate(GL_BACK,
1156                                          stencil->Function[1],
1157                                          stencil->Ref[1],
1158                                          stencil->ValueMask[1]);
1159                _mesa_StencilMaskSeparate(GL_BACK, stencil->WriteMask[1]);
1160                _mesa_StencilOpSeparate(GL_BACK, stencil->FailFunc[1],
1161                                        stencil->ZFailFunc[1],
1162                                        stencil->ZPassFunc[1]);
1163             }
1164             break;
1165          case GL_TRANSFORM_BIT:
1166             {
1167                GLuint i;
1168                const struct gl_transform_attrib *xform;
1169                xform = (const struct gl_transform_attrib *) attr->data;
1170                _mesa_MatrixMode(xform->MatrixMode);
1171                if (_math_matrix_is_dirty(ctx->ProjectionMatrixStack.Top))
1172                   _math_matrix_analyse( ctx->ProjectionMatrixStack.Top );
1173
1174                /* restore clip planes */
1175                for (i = 0; i < MAX_CLIP_PLANES; i++) {
1176                   const GLuint mask = 1 << 1;
1177                   const GLfloat *eyePlane = xform->EyeUserPlane[i];
1178                   COPY_4V(ctx->Transform.EyeUserPlane[i], eyePlane);
1179                   if (xform->ClipPlanesEnabled & mask) {
1180                      _mesa_set_enable(ctx, GL_CLIP_PLANE0 + i, GL_TRUE);
1181                   }
1182                   else {
1183                      _mesa_set_enable(ctx, GL_CLIP_PLANE0 + i, GL_FALSE);
1184                   }
1185                   if (ctx->Driver.ClipPlane)
1186                      ctx->Driver.ClipPlane( ctx, GL_CLIP_PLANE0 + i, eyePlane );
1187                }
1188
1189                /* normalize/rescale */
1190                if (xform->Normalize != ctx->Transform.Normalize)
1191                   _mesa_set_enable(ctx, GL_NORMALIZE,ctx->Transform.Normalize);
1192                if (xform->RescaleNormals != ctx->Transform.RescaleNormals)
1193                   _mesa_set_enable(ctx, GL_RESCALE_NORMAL_EXT,
1194                                    ctx->Transform.RescaleNormals);
1195             }
1196             break;
1197          case GL_TEXTURE_BIT:
1198             /* Take care of texture object reference counters */
1199             {
1200                const struct gl_texture_attrib *texture;
1201                texture = (const struct gl_texture_attrib *) attr->data;
1202                pop_texture_group(ctx, texture);
1203                ctx->NewState |= _NEW_TEXTURE;
1204             }
1205             break;
1206          case GL_VIEWPORT_BIT:
1207             {
1208                const struct gl_viewport_attrib *vp;
1209                vp = (const struct gl_viewport_attrib *) attr->data;
1210                _mesa_Viewport(vp->X, vp->Y, vp->Width, vp->Height);
1211                _mesa_DepthRange(vp->Near, vp->Far);
1212             }
1213             break;
1214          case GL_MULTISAMPLE_BIT_ARB:
1215             {
1216                const struct gl_multisample_attrib *ms;
1217                ms = (const struct gl_multisample_attrib *) attr->data;
1218                _mesa_SampleCoverageARB(ms->SampleCoverageValue,
1219                                        ms->SampleCoverageInvert);
1220             }
1221             break;
1222
1223          default:
1224             _mesa_problem( ctx, "Bad attrib flag in PopAttrib");
1225             break;
1226       }
1227
1228       next = attr->next;
1229       FREE( attr->data );
1230       FREE( attr );
1231       attr = next;
1232    }
1233 }
1234
1235
1236 /**
1237  * Helper for incrementing/decrementing vertex buffer object reference
1238  * counts when pushing/popping the GL_CLIENT_VERTEX_ARRAY_BIT attribute group.
1239  */
1240 static void
1241 adjust_buffer_object_ref_counts(struct gl_array_attrib *array, GLint step)
1242 {
1243    GLuint i;
1244    array->ArrayObj->Vertex.BufferObj->RefCount += step;
1245    array->ArrayObj->Normal.BufferObj->RefCount += step;
1246    array->ArrayObj->Color.BufferObj->RefCount += step;
1247    array->ArrayObj->SecondaryColor.BufferObj->RefCount += step;
1248    array->ArrayObj->FogCoord.BufferObj->RefCount += step;
1249    array->ArrayObj->Index.BufferObj->RefCount += step;
1250    array->ArrayObj->EdgeFlag.BufferObj->RefCount += step;
1251    for (i = 0; i < MAX_TEXTURE_COORD_UNITS; i++)
1252       array->ArrayObj->TexCoord[i].BufferObj->RefCount += step;
1253    for (i = 0; i < VERT_ATTRIB_MAX; i++)
1254       array->ArrayObj->VertexAttrib[i].BufferObj->RefCount += step;
1255
1256    array->ArrayBufferObj->RefCount += step;
1257    array->ElementArrayBufferObj->RefCount += step;
1258 }
1259
1260
1261 #define GL_CLIENT_PACK_BIT (1<<20)
1262 #define GL_CLIENT_UNPACK_BIT (1<<21)
1263
1264
1265 void GLAPIENTRY
1266 _mesa_PushClientAttrib(GLbitfield mask)
1267 {
1268    struct gl_attrib_node *newnode;
1269    struct gl_attrib_node *head;
1270
1271    GET_CURRENT_CONTEXT(ctx);
1272    ASSERT_OUTSIDE_BEGIN_END(ctx);
1273
1274    if (ctx->ClientAttribStackDepth >= MAX_CLIENT_ATTRIB_STACK_DEPTH) {
1275       _mesa_error( ctx, GL_STACK_OVERFLOW, "glPushClientAttrib" );
1276       return;
1277    }
1278
1279    /* Build linked list of attribute nodes which save all attribute */
1280    /* groups specified by the mask. */
1281    head = NULL;
1282
1283    if (mask & GL_CLIENT_PIXEL_STORE_BIT) {
1284       struct gl_pixelstore_attrib *attr;
1285 #if FEATURE_EXT_pixel_buffer_object
1286       ctx->Pack.BufferObj->RefCount++;
1287       ctx->Unpack.BufferObj->RefCount++;
1288 #endif
1289       /* packing attribs */
1290       attr = MALLOC_STRUCT( gl_pixelstore_attrib );
1291       MEMCPY( attr, &ctx->Pack, sizeof(struct gl_pixelstore_attrib) );
1292       newnode = new_attrib_node( GL_CLIENT_PACK_BIT );
1293       newnode->data = attr;
1294       newnode->next = head;
1295       head = newnode;
1296       /* unpacking attribs */
1297       attr = MALLOC_STRUCT( gl_pixelstore_attrib );
1298       MEMCPY( attr, &ctx->Unpack, sizeof(struct gl_pixelstore_attrib) );
1299       newnode = new_attrib_node( GL_CLIENT_UNPACK_BIT );
1300       newnode->data = attr;
1301       newnode->next = head;
1302       head = newnode;
1303    }
1304    if (mask & GL_CLIENT_VERTEX_ARRAY_BIT) {
1305       struct gl_array_attrib *attr;
1306       struct gl_array_object *obj;
1307
1308       attr = MALLOC_STRUCT( gl_array_attrib );
1309       obj = MALLOC_STRUCT( gl_array_object );
1310
1311 #if FEATURE_ARB_vertex_buffer_object
1312       /* increment ref counts since we're copying pointers to these objects */
1313       ctx->Array.ArrayBufferObj->RefCount++;
1314       ctx->Array.ElementArrayBufferObj->RefCount++;
1315 #endif
1316
1317       MEMCPY( attr, &ctx->Array, sizeof(struct gl_array_attrib) );
1318       MEMCPY( obj, ctx->Array.ArrayObj, sizeof(struct gl_array_object) );
1319
1320       attr->ArrayObj = obj;
1321
1322       newnode = new_attrib_node( GL_CLIENT_VERTEX_ARRAY_BIT );
1323       newnode->data = attr;
1324       newnode->next = head;
1325       head = newnode;
1326       /* bump reference counts on buffer objects */
1327       adjust_buffer_object_ref_counts(&ctx->Array, 1);
1328    }
1329
1330    ctx->ClientAttribStack[ctx->ClientAttribStackDepth] = head;
1331    ctx->ClientAttribStackDepth++;
1332 }
1333
1334
1335
1336
1337 void GLAPIENTRY
1338 _mesa_PopClientAttrib(void)
1339 {
1340    struct gl_attrib_node *attr, *next;
1341
1342    GET_CURRENT_CONTEXT(ctx);
1343    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
1344
1345    if (ctx->ClientAttribStackDepth == 0) {
1346       _mesa_error( ctx, GL_STACK_UNDERFLOW, "glPopClientAttrib" );
1347       return;
1348    }
1349
1350    ctx->ClientAttribStackDepth--;
1351    attr = ctx->ClientAttribStack[ctx->ClientAttribStackDepth];
1352
1353    while (attr) {
1354       switch (attr->kind) {
1355          case GL_CLIENT_PACK_BIT:
1356 #if FEATURE_EXT_pixel_buffer_object
1357             ctx->Pack.BufferObj->RefCount--;
1358             if (ctx->Pack.BufferObj->RefCount <= 0) {
1359                _mesa_remove_buffer_object( ctx, ctx->Pack.BufferObj );
1360                (*ctx->Driver.DeleteBuffer)( ctx, ctx->Pack.BufferObj );
1361             }
1362 #endif
1363             MEMCPY( &ctx->Pack, attr->data,
1364                     sizeof(struct gl_pixelstore_attrib) );
1365             ctx->NewState |= _NEW_PACKUNPACK;
1366             break;
1367          case GL_CLIENT_UNPACK_BIT:
1368 #if FEATURE_EXT_pixel_buffer_object
1369             ctx->Unpack.BufferObj->RefCount--;
1370             if (ctx->Unpack.BufferObj->RefCount <= 0) {
1371                _mesa_remove_buffer_object( ctx, ctx->Unpack.BufferObj );
1372                (*ctx->Driver.DeleteBuffer)( ctx, ctx->Unpack.BufferObj );
1373             }
1374 #endif
1375             MEMCPY( &ctx->Unpack, attr->data,
1376                     sizeof(struct gl_pixelstore_attrib) );
1377             ctx->NewState |= _NEW_PACKUNPACK;
1378             break;
1379          case GL_CLIENT_VERTEX_ARRAY_BIT: {
1380             struct gl_array_attrib * data =
1381               (struct gl_array_attrib *) attr->data;
1382
1383             adjust_buffer_object_ref_counts(&ctx->Array, -1);
1384
1385             ctx->Array.ActiveTexture = data->ActiveTexture;
1386             ctx->Array.LockFirst = data->LockFirst;
1387             ctx->Array.LockCount = data->LockCount;
1388
1389             _mesa_BindVertexArrayAPPLE( data->ArrayObj->Name );
1390
1391 #if FEATURE_ARB_vertex_buffer_object
1392             _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB,
1393                                 data->ArrayBufferObj->Name);
1394             _mesa_BindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB,
1395                                 data->ElementArrayBufferObj->Name);
1396 #endif
1397
1398             MEMCPY( ctx->Array.ArrayObj, data->ArrayObj,
1399                     sizeof( struct gl_array_object ) );
1400
1401             FREE( data->ArrayObj );
1402
1403             /* FIXME: Should some bits in ctx->Array->NewState also be set
1404              * FIXME: here?  It seems like it should be set to inclusive-or
1405              * FIXME: of the old ArrayObj->_Enabled and the new _Enabled.
1406              */
1407
1408             ctx->NewState |= _NEW_ARRAY;
1409             break;
1410          }
1411          default:
1412             _mesa_problem( ctx, "Bad attrib flag in PopClientAttrib");
1413             break;
1414       }
1415
1416       next = attr->next;
1417       FREE( attr->data );
1418       FREE( attr );
1419       attr = next;
1420    }
1421 }
1422
1423
1424 void _mesa_init_attrib( GLcontext *ctx )
1425 {
1426    /* Renderer and client attribute stacks */
1427    ctx->AttribStackDepth = 0;
1428    ctx->ClientAttribStackDepth = 0;
1429 }